Source code for taurus.core.util.prop
#!/usr/bin/env python
#############################################################################
##
## This file is part of Taurus
##
## http://taurus-scada.org
##
## Copyright 2011 CELLS / ALBA Synchrotron, Bellaterra, Spain
##
## Taurus is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## Taurus is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with Taurus. If not, see <http://www.gnu.org/licenses/>.
##
#############################################################################
"""This module contains a decorator to simplify the use of property."""
__all__ = ["propertx"]
__docformat__ = "restructuredtext"
[docs]def propertx(fct):
'''
Decorator to simplify the use of property.
Like @property for attrs who need more than a getter.
For getter only property use @property.
adapted from http://code.activestate.com/recipes/502243/
'''
arg=[None, None, None, None]
for i, f in enumerate(fct()):
arg[i] = f
if not arg[3] :
arg[3]=fct.__doc__
return property(*arg)
if __name__ == '__main__':
from log import Logger
class example(object, Logger):
def __init__(self):
Logger.__init__(self, "example")
self._a=100
self.bar = "why"
@propertx
def bar():
# BAR doc
def get(self):
print "\tgetting", self._a
return self._a
def set(self, val):
print "\tsetting", val
self._a=val
return get, set
foo=example()
print foo.bar
#foo.bar='egg'
#print foo.bar